Bobbin stripper



July 30, 1935. E. A. TERRELL BOBBIN STRIPPER Filed Jan. 24, 1931 2 Sheets-Sheet l gym/(W E. A. TERRELL BOBBIN STRIPPER July 30, 1935.

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adj y Patented July 30, 1935 r v UNITED .STATES" PATENT OFFICE Edgar A. Terrell, Charlotte, N. C., assignor to The Terrell Machine Company, Charlotte, N. 0., a corporation of North Carolina Application January 24, 1921, Serial No. 511,022

26 Claims (01. 28-20) The invention relates to bobbin strippers, and ing bobbins are advanced to an initial stripping especially to machines of the general character position by a feed-chute, as fully shown in the shown in my Patent No. 1,740,l28, dated Decempatent referred to, and here omitted. In this ber 17, 1929. 7 position the bobbin-head rests on supports 22 .5 The general object of the invention is to proprovided in the guideblocks 25 of the strippingvide, in a machine of the stated type, or of similar assemblies 4, with the inward face of the head, or organization or mode of operation, wipers, the fillet connecting such face to the feelerbrushes or equivalent means for removing from barrel, adjacent the thin-stripper-blades 28, and the bobbin-barrels trailing threads, fragments of also adjacent downwardly-convergent positioning 10 waste, or lint remaining thereon after a stripping edges SI of the guide blocks (or on tongues of 10* action in which blades cooperate with the barrel cover-plates 34 adjustable thereon, as disclosed and the Waste yarn thereon to remove the bulk of in my companion application filed Aug. 22, 1931, such waste; and means for operating such wipers Serial No; 563,137). The guide-blocks also usuor the like in proper relation to other parts of ally support other stripping blades 31. 35 the. machine, especially the bobbin-advancing The pull-head I 5 isreciprocated by a pitman means, and the bobbin moved thereby. 40, connected to a, crank 43 on a shaft 46, which Another object is to so arrange or organize the is mounted in bearings 49 on frame-members l wiping mechanism or analogous waste residue near the rear (delivery) end of the machine. removing means, that it may easily and quickly The shaft is driven by a bevel gear 52 fixed on go be applied as an attachment to a stripping maone of its ends, and a pinion 55 engaging the gear, 0 chine of the general character referred to, and and carried by a longitudinal driving shaft58. will then operate in proper coordination with The novel and improved bobbin-barrel wiping other parts of the machine. I mechanism, adapted as an attachment forfor The characteristics and advantages of the incombined with essential features of a bobbinvention are further suificiently explained in constripper as above described, is constructed and 25 nection with the following detail description of arranged as follows: k the accompanying drawings, which show one pre- .Wiper-supports or arms 6| are mounted beferred embodiment. After considering this extween the forward faces of the stripper-blade ample,.skilled persons will understand that many guide-blocks and the pull-head and at opposite Variations may be made without departing from sides of the axis of bobbin-movement, for move- 30 the principles disclosed; and I contemplate emment toward and from such axis. At the upper ployment of any structures that are prop y end of each arm is a wiper 64, which in the W hin the c p of the pp Claimsform shown is a brush; and preferably these Having reference to the drawings, wipers are detachably mounted on the arms, to 1 is a top p f Stripping machine facilitaterepair or replacement. For this pur- 35 embodying the invention in one fOrm, parts of pose each wiper consists of a head or body ,6! the machine P which are not essential to an detachably secured to the arm end as by screws understanding of the invention being omitted. To, with bristles or teeth '13 which may be of Fig.2 is a centraLvertical, longitudinal section, wire or other material, set in the body-face an enlarged. Y which is directed toward the other wiper. In- 40 Fig. 3 is a transverse section a .-33, Figs. 1 stead of wires or bristles the active wiping eleand 2. ments may be of card-clothing, or stripsof suit- The invention structure is-, in the present emable flexible material such as felt or leather, of bodiment, incorporated in or applied to a stripsubstantial thickness, adapted to engage the ping machine of the type disclosed in my patent bobbin-barrel with the necessary firmness, but 45 referred to above, including, as also here shown, a without injury thereto, and to wipe or clean mainframe or bed having longitudinal sideofi any residual waste, trailing threads or lint members or rails I, stripper-blade assemblies 4 remaining after the action of the stripping blades, oppositely located on the side rails, a' push-head as the bobbin is advanced lengthwise, first by I mounted for reciprocation in guides on the, side the push-head and then by the jaws of the pull- 50' rails and having'a tip-socket l8 and a pushing head, The arms or equivalent wipersupports face l3 to engage the bobbin tip-end, and a pullare operated by connection with a driving elehead It, also reciprocating in guides in the side ment of the machine, in timed relation to moverails, and having jaws '49 to grasp the bobbinments of the pushand pull-heads, and of the barrel just behind the head. The waste-carrybobbin, being moved divergently prior to 13116 55 first advancing movement of the bobbin, to allow passage of the head without engagement with the wipers, and are then moved convergently, to bring the active wiping elements into engagement with the barrel adjacent the head, and are retained in this position until the bobbintip passes away from between them, so that the residual waste is effectively removed from the barrel.

The mode of mounting and operating the wiper arms or equivalent elements may vary consid erably. As here shown, the arms have an oscillating movement and for this purpose they are carried by the forward ends of rockshafts I6 and I1. Each arm has a sleeve or hub-portion I9 receiving the shaft-end, and detachably secured to it, as by set-screws 82. vEach shaft is mounted for oscillation in bearings 85 at the ends of a shaft-support or frame-piece 88 which is arranged for connection to the under face of one of the machine-frame side-members I, as by bolts 9| passing throughregistering holes in the respective frame-members. The rockshafts are connected to move simultaneously by arms 94 secured on them between the bearings 85. These arms extend inward and slightly downward, below the path of movement of pull-head I6, and their ends are connected as bya pin or screwstud 91 set in one of them and engaging in a slot I in the other.

One of the rockshafts, IT, has at its rear end an arm I 03 including a portion extending downward and thence curving outward and rearward, as is necessitated by' the machine frame, and another portion projecting upward, and provided with a cam-roller I06 to cooperate with a cam I09, which is operatively connected with a shaft 46 above referred to, which drives pull-head I6. This cam has a semi-circumferential concentric portion I I2, an eccentric gradual-rise portion I I leading to a concentric dwell portion H8, and a nearly-radial quick-drop portion I2I. It also has a central circular aperture I24 to fit about the hub I2'I of gear 52, and an arcuate slot I3 through which passes a screw I 33 engaging in a tapped hole in the gear. This screw-and-slot connection provides for securing the cam to rotate with the gear and shaft, and also for relative angular adjustment of the cam, to properly time the wiper action in relation to movements of the pull-head andbobbin. The cam may also have a lug I36 through which passes a set-screw I39 engaging with the gear hub to aidin securing the cam to the gear.

Cam-follower'arm I03 above mentioned, has a lug I42 tapped to receive a stop-screw I45 which is secured in adjusted position by a locknut I48. The head of this stop-screw engages anunder face of one of the main frame sidemembers I, and is normally held in this position by a spring I5I, tensioned between a stud or screw I54 set in arm I03 and the end of a screw I51, which passes through a hole in a bracket I60 secured asby a screw I63 to the top face of a frame side-member I. Screw I51 is secured to the bracket by nuts I66, and by obvious manipulation of these nuts may be moved axially therein to adjust the tension of spring I5I-. The

spring acts as a motor element to rotate rockshaft 11 and the other shaft I6 connected theref to by arms 84, in directions to cause the wipers 64 to move convergently to an extent limited by stop'screw I45, which is adjusted with reference to the bobbin-barrel diameter and the degree of pressure to be exerted by the wiping ele ments, such as wires or bristles "I3, upon the bobbin-barrel. The engagement of the wipers with the bobbin-barrels is thus effected by and dependent upon spring-pressure, avoiding greater complications in structure or adjustment which would be involved in positive convergent movement of the wipers, and also avoiding excessive pressure and consequent scratching or scoring of the barrels, where toothed elements are used.

When the wipers are in active or wiping position as just described, stop-screw I 45, as clearly shown in Fig. 2; also holds the cam roll I06 considerably away from the smaller concentric portion II2 of cam I09. This normal clearance permits the wipers to move convergently to the desired extent, as limited by engagement of the stop-screw with the frame, and also permits an ample range of adjustment by the screw to allow the wipers to come closer together as the bristles wear.

With the parts in the positions shown, crank 43 and pitman 40 are at rear dead-center, corresponding to the rearmost position of pull-head I6, whose jaws I9 have opened to release a bobbin, the barrel of which has in the preceding rearward movement'of the jaws been drawn between the wipers 64, which were and still are maintained in'their inward or wiping positions by spring I5I the convergent movement of the wipers being limited, as above explained, by stop-screw I 45. In the continued rotation of shaft 46 in the direction of the arrow (Fig. 2), the pull-head I 6 is moved forward to receive another bobbin, and in the first part of this movement the eccentric face II5 of cam I09 strikes roll I06 and causes the wipers to move divergently sufiiciently to permit free passage between them of a bobbin-head of largest diameter. When the larger'concentric or dwell portion 8 I 8 of the cam engages the roll, the wipers are separated to the maximum extent, and are so held open until thepull-head has nearly completed its forward stroke. At this time the pushhead has advanced the bobbin initially between the-stripping bladeswhioh grasp and push the mass of waste relatively rearwardly on the bobbinbarrel until the inward face of the head has passed the wipers; the quick-drop portion I ZI of the cam has now reached cam roll I05 and spring I 5| acts to turn the rockshafts and move the wipers convergently to engage thebarrel. At about this time the pull-jaws converge toengage about the barrel at the inward face of the head, and the bobbin is pulled through between the wipers and any residual waste is removed from the barrel, as above sufficiently explained.

It will now be understood that the invention structure may be considered as being embodied in a complete stripping machine of the general character described; or that otherwise it may be understood to consist in wiping mechanism capable of quick and easy attachment to such a machine. When designed; as an attachment, the machine as designed and built may have provision for placing the wiper mechanism thereon without machining operations and by the use of ordinary tools such as a wrench and screw driver; thus, the machine frarhe-side-members may have holes drilled therein in proper positions to receive the bolts 9| for securing the rockshaft frame pieces;

and these bolts may in fact be used in absence of the wiper attachment to hold in place the retaining plates or gibs IE9 of the pull-head guideways I15 and will also serve the same purpose after the rockshaft frame pieces 88 are attached. One of the frame side-members may also be drilled and pointe: teeth clasping the bobbin, to wipe off movement between such devices and a bobbin to effect the stripping, brushes clothed with sharp points adapted to clasp the bobbin to remove residual waste, and means for spreading the brushes to permit passage of the bobbin-head therebetween while the stripping devices are working.

4. In a bobbin-stripper, the combination with stripping means, a pusher for advancing a bobbin lengthwise in relation to the stripping means in a stripping action, and a puller for completing bobbin advance, of means structurally independent of the stripping-means for wiping residual waste from the bobbin barrel'during the bobbins advance, and means for advancing and retracting said will -g means in relation to thebarrel.

5. A bobbin-stripper comprising in combination, stripping means, a puller for advancing a bobbin lengthwise, driving means for moving the puller to and fro, and means beyond the stripping means in the direction of bobbinrmovement for wiping residual waste from the bobbin barrel, independently actuated by said driving means to advance and retract the wiping means in relation to the bobbin barrel.

6. In a bobbin-stripper, the'coinbination with stripping means, means engaging the bobbin surface for positioning a bobbin for action of the stripping means, and means for advancing the bobbin longitudinally in a stripping action, of wipers mounted for movement in a plane perpendicular to the bobbin axis toward and from the bobbin barrel at opposite sides thereof be yond the stripping means, and means for operating the wipers independently ofthe stripping means. v

7.. A bobbin-stripper comprising in combination, stripping means, means for positioning a bobbin for, action of the stripping means, and means for advancing the bobbin longitudinally in a stripping action, wipers mounted for movement toward and from thebobbin barrel at opposite sides thereof, means connecting the wipers for concurrent movement, and wiper-operating means acting after the stripping means.

- 8. A bobbin-stripper comprising in combination, stripping means, means for positioning a bobbin for action of the stripping means, and means, for advancing a bobbin longitudinally in a stripping action, wipers mounted for movement toward and from the bobbin barrel at opposite sides thereof, means connecting the wipers for concurrent movement, andmeans for retracting the wipers prior to-a stripping action and for advancing them toengage the barrel after the 1 stripping means have engaged the bobbin-barrel.

9. A bobbin-stripper comprising in combination, stripping means, means for positioning a bobbin for action of the stripping means, a pusher for advancing the bobbin lengthwise and a puller for completing such bobbin advance, a shaft connectedto reciprocate the bobbin-puller, wiping elements at opposite sides of the path of'bobbin movement posterior to the stripping. means, means supporting the wipers for movement toward and from the bobbin, a caution said shaft, and means operated by the cam for moving the wipingelements convergently and divergently.

10; In a bobbin-stripping machine, in. combination, a stationary frame providing guides for a push-head and a pull-head which move convergently and divergently, stripping blades and bobbin locating means on the frame intermediate the. push-head and pul1-head,'a driving shaft connected to reciprocate the pull-head, wipersupports mounted on the frame for movement toward and from a bobbin advanced between the stripping blades bythe push-head and pullhead, wiping'elements on'said supports to cooperate with the bobbinbarrel and remove residual waste therefrom, and means actuated by said shaft for moving the wiper-supports.

11. In a bobbin-stripping machine, in combination, a pull-head, stripping blades, a driving shaft connected to reciprocate the pull-head,

rocirshafts, wiper arms carried by the rockshafts' l2. Ina bobbin-stripping machine, in combination, a pull-head, stripping blades, a driving shaft connected to reciprocate: the pull-head, rockshafts mounted for oscillation at opposite sides of the path of bcbbinmovement, wiper armscarried by the rockshafts adjacent and posterior'to the stripping blades, wiping elements-on the arms to engage opposite sides of the bobbin barrel and remove residual waste therefrom, means connecting the rockshafts 'to movetogether, a

cam adjustably mountedxon saidshaft; and an arm on one of the rockshafts having a follower cooperating with the cam. V

13. Wiper mechanism organized as an attachment for abobbin-stripping;machine of the genoral character described, and employing stripping adapted for attachment to the machine frame,

wiping elements movably mounted on'the, supports and adapted to cooperate with abobbin barrel, wiper-operating means 'structurallyindependent of the stripping blades adapted for cooperation with a driving element of the ma-,

chine, and an adjustable stop arranged to cooperate with a fixed part of said machine to limit movement of said wiping elements.

15. Wiper mechanism organized as an attachment for a bobbin-stripper of the general character described, said mechanism comprising rocksh'afts, supports in which the rocksha'fts are mounted for oscillation and adapted for attachment to the stripper frame, wiper arms on the shafts and wiping elements carried by the arms to cooperate with a bobbin barrel, and another arm on one of the shafts having a cam follower for cooperation with a cam to operate the rockshaft.

16. A bobbin-stripper having in combination stripping devices, means for producing relative movement between such devices and a bobbin to eife ct the stripping, a wiper yieldingly actuated into engagement with the bobbin subsequent to the stripping devices, a rotary member, means engaging with such member to move the wiper away from the bobbin, and means apart from'the member for limiting the movement of the wiper toward the bobbin.

17. A bobbin-stripper comprising in combination, stripping means, means for positioning a bobbin for action of the stripping means, a pusher for advancing the bobbin lengthwise and a puller for completing such bobbin advance, means for drivingthe puller, wiper elements independent of the stripping means mounted at opposite sides of the path of bobbin movement posterior to the stripping means, and means operated by the puller driving'means to move the wiping elements divergently permitting passage of the bobbin-head and convergently to engage .the barrel and wipe residual waste therefrom.

18. A bobbin-stripper having in combination stripping means, means for positioning a bobbin for action of the stripping means; a pusher for advancing the bobbin lengthwise and a puller for completing such bobbin advance, a shaft connected to reciprocate the bobbin puller, a cam on the shaft,'parallel rockshafts mounted for oscillation at opposite sides of the axis of movement of the pusher and puller, arms on the shafts, wiping elements carried by the arms for cooperation with opposite sides of the bobbin barrel adjacent and posterior to the stripping means, means connecting the rockshafts to move si- 7 multaneously, and an arm on one of the shafts having a follower cooperating with the cam.

19. In a bobbin-stripping machine, in combination, a stationary frame providing guides for a push-head and a pull-head which move convergently and divergently, stripping blades and bobbin locating means on the frame intermediate the push-head and pull-head, a driving shaft connected to reciprocate the pull-head, wiper-supports mounted on theframe for movement toward and from a bobbin advanced between the stripping blades by the push-head and pullhead, wiping elements on said supports to cooperate with the bobbin barrel and remove residual waste therefrom, a spring arranged to move the wiper-supports convergently, and means actuated by said shaft for moving said supports divergently.

20. In a bobbin-stripping machine, in combination, a pull-head, stripping blades, a driving shaft connected to reciprocate the pull-head, rockshafts, wiper arms carried by the rockshafts adjacent the stripping blades, wiping elements on the arms to engage the bobbin barrel and remove residual waste therefrom, means connecting the rockshafts to move together, a cam on said driving shaft, an arm on one of the rockshafts having a follower cooperating with the cam, and a spring acting on one of the rockshafts to move the wiper arms convergently.

21. In a bobbin-stripping machine, in combination, a pull-head, stripping blades, a driving shaft connected to reciprocate the pull-head, rockshafts, wiper arms carried by the rockshafts adjacent the stripping blades, wiping elements on the arms to engage the bobbin barrel and remove residual waste therefrom,'means connecting the rockshafts to move together, a cam on said driving shaft, an arm on one of the rockshafts having a follower cooperating with the cam, a spring acting on one of the rockshafts to move the wiper arms convergently, and a stop limiting such convergent movement.

22. In a bobbin-stripping machine, in combination, a pull-head, stripping blades, a driving shaft connected to reciprocate the pull-head, ,rockshafts, wiper arms carried by the rockshafts adjacent the stripping blades, wiping elements on the arms to engage the bobbin barrel and remove residual waste therefrom, means connectthe rockshafts to move together, a cam on said driving shaft, an arm 'on one of the rockshafts having a follower cooperating with the cam, a spring acting on one of the rockshafts to move the wiper arms convergently, and a stop adjustably limiting the convergent movement of the wiper arms and also normally retaining the cam follower out of contact with the cam to determine convergent movement of the wiper arms independently of the cam.

23. Wiper mechanism organized as an attachment for a bobbin-stripper to the general character described, said mechanism comprising rockshafts, supports in which the rockshafts are mounted for oscillation and adapted for attachment to the stripper frame, wiper arms on the shafts and wiping elements carried by the arms to cooperate with a bobbin barrel, another arm on one of the shafts provided with a cam follower, and a cam adapted for adjustable connection to a rotary driving element of said machine and to cooperate with the cam follower to oscillate the rockshaft.

2. Wiper mechanism organized as an attachment for a bobbin-stripper of the general character described, said mechanism comprising rockshafts, supports in which the rockshafts are mounted for oscillation and adapted for attachment to the stripper frame, wiper arms on the shafts and wiping elements carried by the arms to cooperate with a bobbin barrel, another arm on one of the shafts having a cam follower for cooperation with a cam to operate the rockshaft, and a spring connected to said follower arm, the spring being adapted for connection also to a fixed point of the machine frame and yieldably acting to move said wiper arms convergently.

25. Wiper mechanism organized as an attachment fora bobbin-stripper of the general character described, said mechanism comprising rockshafts, supports in which the rockshafts are mounted for oscillation and adapted for attachment to the stripper frame, wiper arms on the shafts and wiping elements carried by the. arms to cooperate with a bobbin barrel, other arms on the shafts and a connection between such arms to cause the rockshafts to move simultaneously, a rotating cam, and cam-following means on one of the shafts for cooperation with the cam to operate the rockshaft.

26. Wiper mechanism organized as an attachment'for a bobbin-stripper of the general character described, said mechanism comprising rockshafts, supports in which the rockshafts are mounted for oscillation and adapted for attachment to the stripper frame, wiper arms on the shafts and wiping elements carried by the arms to cooperate with a bobbin barrel, a connection between the rockshaft to cause them to move simultaneously, another arm on one of the shafts having a cam follower for cooperation with a the machine frame and yieldingly acting to move said wiper arms convergently.

EDGAR A. TERRELL. 10

CERTIFECA'IE or ceRaecrroN Patent Ne. 2,009,709. July 30, 1935.

EDGAR A. TERRELL.

it is hereby certified that error appears in the printed specification of the above numbered patent requiring correction as follows; Page 3, first celumn, iines 52 and 53, claim 6, after "means" second occurrence, strike out the words "engaging the bobbin surface" anti insert the same after "means" first occurrence and before the comma, in same line and claim; and that the said Letters Patent should he read with this correction therein that the same may conform to the record of the case in the Patent Office.

Signed and sealed this 17th day of September, A. D. 1935.

Leslie Frazer (Seal) Acting Commissioner of Patents. 

